Where: Japan (43.0° N, 144.1° E: paleocoordinates 43.1° N, 143.5° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Shiranuka Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)
• STRATIGRAPHIC RELATIONS: From Shiranuka Fm of the Atsunai Gp, which overlies the Atsunai Fm of the Atsunai Gp (Middle Miocene) and is overlain by Pleistocene terraces. THICKNESS: >350 m thick. AGE: Early Pliocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Composite checklist for formation.
• formation-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified sandstone and poorly lithified siltstone
Size class: macrofossils
Collection methods: COLLECTOR: Presumably Y. Honda (c. 1984) and Suni and Yamaguchi (c. 1969). REPOSITORY: Uknown repository.
Primary reference: Y. Honda. 1989. Paleogene molluscan faunas from the Kushiro Coal Field, Eastern Hokkaido. Tohoku University, Science Report, 2nd series 60(1):1-137 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 70598: authorized by Austin Hendy, entered by Austin Hendy on 29.03.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Buccinidae indet. Rafinesque 1815 true whelk | |
Bivalvia | |
Clinocardium sp. Keen 1936 cockle | |
Macoma (Macoma) tokyoensis tellin clam
Macoma (Macoma) calcarea Gmelin 1792 tellin clam | |
Mya (Mya) cuneiformis Bohm 1915 softshell clam | |
Nuculana sp. Link 1807 pointed nut clam | |
Yoldia sp. Möller 1842 clam |